Keep the sound state when reset/gameover, fix the pause function

Author: trungvose

src/app/state/tetris/tetris.query.ts

@@ -39,6 +39,10 @@ export class TetrisQuery extends Query<TetrisState> {
     return this.raw.gameState === GameState.Started;
   }
 
+  get isPause() {
+    return this.raw.gameState === GameState.Paused;
+  }
+
   get isEnableSound(): boolean {
     return !!this.raw.sound;
   }

src/app/state/tetris/tetris.service.ts

@@ -65,6 +65,9 @@ export class TetrisService {
   }
 
   resume() {
+    if (!this._query.isPause) {
+      return;
+    }
     let { speed } = this._query.raw;
     this._store.update({
       locked: false,
@@ -74,6 +77,9 @@ export class TetrisService {
   }
 
   pause() {
+    if (!this._query.isPlaying) {
+      return;
+    }
     this._store.update({
       locked: true,
       gameState: GameState.Paused
@@ -82,7 +88,11 @@ export class TetrisService {
   }
 
   reset() {
-    this._store.update(createInitialState(this._pieceFactory));
+    const { sound } = this._query.raw;
+    this._store.update({
+      ...createInitialState(this._pieceFactory),
+      sound
+    });
   }
 
   moveLeft() {
@@ -242,13 +252,14 @@ export class TetrisService {
   private _onGameOver() {
     this.pause();
     this._soundManager.gameOver();
-    let { points, max } = this._query.raw;
+    let { points, max, sound } = this._query.raw;
     let maxPoint = Math.max(points, max);
     LocalStorageService.setMaxPoint(maxPoint);
     this._store.update({
       ...createInitialState(this._pieceFactory),
       max: maxPoint,
       gameState: GameState.Over,
+      sound
     });
   }